Blade holder for a knife sharpener



FIG. 1 is a perspective view of a blade holder for a knife sharpener, showing my new design;

FIG. 2 is a left side view thereof, the right side view being a mirror image;

FIG. 3 is a front view thereof;

FIG. 4 is a plan view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a blade holder for a knife sharpener, as shown and described. 